Joined
·
3,361 Posts
I put a new 23 gal. below deck tank in my boat this winter (motor is a 1980 75hp OMC). I put it up front, so it's about 20' from the motor. It primes fine with the bulbs (I put 2 in, one up front, one in back near the motor). The fitting on top of the tank is a barbed fitting with a check valve in it that only lets fuel go out, not drain back in. I'm guessing that it's there for inboard applications to keep fuel from draining out of the lines and losing prime, but like I said, that's just a guess.
I have to baby it to get it up to full throttle or it will starve out and die. It's also tough to start since it seems to need to be at high RPM to draw fuel. Once I coax it up to about half throttle, she runs well and throttle response is good. My questions are:
1. Could that check valve require more vacuum than my fuel pump can put out at low RPM to open, so takes a while before it will build enough vacuum to open it up to let enough fuel reach the carbs?
2. Will it hurt anything to take it out? I can't see where it would, but I'm not sure.
Carburetors were just rebuilt late last summer, fuel pump is new, and the plugs were just replaced before I put it away (with Sta-bil) for the winter. Thanks in advance!!
Branden
I have to baby it to get it up to full throttle or it will starve out and die. It's also tough to start since it seems to need to be at high RPM to draw fuel. Once I coax it up to about half throttle, she runs well and throttle response is good. My questions are:
1. Could that check valve require more vacuum than my fuel pump can put out at low RPM to open, so takes a while before it will build enough vacuum to open it up to let enough fuel reach the carbs?
2. Will it hurt anything to take it out? I can't see where it would, but I'm not sure.
Carburetors were just rebuilt late last summer, fuel pump is new, and the plugs were just replaced before I put it away (with Sta-bil) for the winter. Thanks in advance!!
Branden